OBERWEIS ASSET MANAGEMENT INC/

PrivateCIK: 937886

Location

LISLE, IL

180

Positions

$3.39B

Total AUM (reported)

69.98M

Total Shares

Allocation by class

COM$3.38B99.9%

ETF$1.83M0.1%

PFD$259.9K0.0%

Portfolio Concentration

Top 3$481.81M14.2%

4–10$399.84M11.8%

11–25$532.80M15.7%

Rest$1.97B58.2%

Top 3 weight

14.2%

Top 10 weight

26.0%

Voting Authority Distribution

Total shares with voting rights: 69.98M

Sole

Full voting authority

69.25M

% of voting shares99.0%

Shared

Joint voting authority

0.00

% of voting shares0.0%

None

No voting authority

724.99K

% of voting shares1.0%

Investment Discretion (by position count)

Sole180

Shared0

Other0

Dominant voting typeSole · 99.0% of voting shares

Institutional Holdings180

Rows:

Applied Optoelectronics Inc.

SOLE

COM

Shares2.35M

TypeSH

Market value$198.78M

5.87%

Sole

2.35M

Shared

0.00

None

0.00

Lumentum Hldgs, Inc.

SOLE

COM

Shares266.22K

TypeSH

Market value$187.09M

5.53%

Sole

257.26K

Shared

0.00

None

8.96K

Credo Technology Group

SOLE

COM

Shares1.02M

TypeSH

Market value$95.93M

2.83%

Sole

999.99K

Shared

0.00

None

21.98K

DigitalOcean Holdings, Inc.

SOLE

COM

Shares927.50K

TypeSH

Market value$79.56M

2.35%

Sole

896.18K

Shared

0.00

None

31.32K

SharkNinja, Inc.

SOLE

COM

Shares599.97K

TypeSH

Market value$63.54M

1.88%

Sole

585.51K

Shared

0.00

None

14.46K

Nova Ltd.

SOLE

COM

Shares137.96K

TypeSH

Market value$59.91M

1.77%

Sole

137.77K

Shared

0.00

None

185.00

Dana Inc.

SOLE

COM

Shares1.61M

TypeSH

Market value$54.23M

1.60%

Sole

1.61M

Shared

0.00

None

0.00

BrightSpring Health Services

SOLE

COM

Shares1.16M

TypeSH

Market value$49.38M

1.46%

Sole

1.16M

Shared

0.00

None

0.00

Macom Technology Solutions

SOLE

COM

Shares215.89K

TypeSH

Market value$47.94M

1.42%

Sole

208.24K

Shared

0.00

None

7.65K

Rambus, Inc

SOLE

COM

Shares526.32K

TypeSH

Market value$45.28M

1.34%

Sole

511.81K

Shared

0.00

None

14.51K

Clean Harbors, Inc.

SOLE

COM

Shares144.35K

TypeSH

Market value$41.39M

1.22%

Sole

137.50K

Shared

0.00

None

6.85K

SiTime Corporation

SOLE

COM

Shares119.28K

TypeSH

Market value$41.19M

1.22%

Sole

119.28K

Shared

0.00

None

0.00

Ultra Clean Holdings

SOLE

COM

Shares640.48K

TypeSH

Market value$39.82M

1.18%

Sole

639.58K

Shared

0.00

None

900.00

Everus Construction Group

SOLE

COM

Shares326.53K

TypeSH

Market value$38.55M

1.14%

Sole

326.53K

Shared

0.00

None

0.00

Frontdoor, Inc.

SOLE

COM

Shares717.96K

TypeSH

Market value$37.95M

1.12%

Sole

715K

Shared

0.00

None

2.96K

Carpenter Technology Corp.

SOLE

COM

Shares94.43K

TypeSH

Market value$37.22M

1.10%

Sole

94.43K

Shared

0.00

None

0.00

Skywest Inc

SOLE

COM

Shares392.50K

TypeSH

Market value$36.04M

1.06%

Sole

383.49K

Shared

0.00

None

9.01K

Lattice Semiconductor Corporat

SOLE

COM

Shares374.44K

TypeSH

Market value$34.73M

1.03%

Sole

374.44K

Shared

0.00

None

0.00

Globus Medical, Inc.-A

SOLE

COM

Shares392.20K

TypeSH

Market value$33.79M

1.00%

Sole

392.20K

Shared

0.00

None

0.00

Camtek, Ltd.

SOLE

COM

Shares222.78K

TypeSH

Market value$33.78M

1.00%

Sole

222.78K

Shared

0.00

None

0.00

Arcutis Biotherapeutics, Inc.

SOLE

COM

Shares1.37M

TypeSH

Market value$32.18M

0.95%

Sole

1.37M

Shared

0.00

None

0.00

Flowserve Corporation

SOLE

COM

Shares434.68K

TypeSH

Market value$31.95M

0.94%

Sole

417.18K

Shared

0.00

None

17.50K

Silicon Motion Techn ADR

SOLE

COM

Shares282.55K

TypeSH

Market value$31.73M

0.94%

Sole

282.55K

Shared

0.00

None

0.00

Life Time Holdings, Inc.

SOLE

COM

Shares1.16M

TypeSH

Market value$31.26M

0.92%

Sole

1.16M

Shared

0.00

None

0.00

Rush Street Interactive, Inc.

SOLE

COM

Shares1.43M

TypeSH

Market value$31.20M

0.92%

Sole

1.37M

Shared

0.00

None

61.97K

Issuer	Class	Shares	Type	Value / Portfolio %	Voting — Sole	None
Applied Optoelectronics Inc.SOLE	COM	2.35M	SH	$198.78M 5.87%	2.35M	0.00
Lumentum Hldgs, Inc.SOLE	COM	266.22K	SH	$187.09M 5.53%	257.26K	8.96K
Credo Technology GroupSOLE	COM	1.02M	SH	$95.93M 2.83%	999.99K	21.98K
DigitalOcean Holdings, Inc.SOLE	COM	927.50K	SH	$79.56M 2.35%	896.18K	31.32K
SharkNinja, Inc.SOLE	COM	599.97K	SH	$63.54M 1.88%	585.51K	14.46K
Nova Ltd.SOLE	COM	137.96K	SH	$59.91M 1.77%	137.77K	185.00
Dana Inc.SOLE	COM	1.61M	SH	$54.23M 1.60%	1.61M	0.00
BrightSpring Health ServicesSOLE	COM	1.16M	SH	$49.38M 1.46%	1.16M	0.00
Macom Technology SolutionsSOLE	COM	215.89K	SH	$47.94M 1.42%	208.24K	7.65K
Rambus, IncSOLE	COM	526.32K	SH	$45.28M 1.34%	511.81K	14.51K
Clean Harbors, Inc.SOLE	COM	144.35K	SH	$41.39M 1.22%	137.50K	6.85K
SiTime CorporationSOLE	COM	119.28K	SH	$41.19M 1.22%	119.28K	0.00
Ultra Clean HoldingsSOLE	COM	640.48K	SH	$39.82M 1.18%	639.58K	900.00
Everus Construction GroupSOLE	COM	326.53K	SH	$38.55M 1.14%	326.53K	0.00
Frontdoor, Inc.SOLE	COM	717.96K	SH	$37.95M 1.12%	715K	2.96K
Carpenter Technology Corp.SOLE	COM	94.43K	SH	$37.22M 1.10%	94.43K	0.00
Skywest IncSOLE	COM	392.50K	SH	$36.04M 1.06%	383.49K	9.01K
Lattice Semiconductor CorporatSOLE	COM	374.44K	SH	$34.73M 1.03%	374.44K	0.00
Globus Medical, Inc.-ASOLE	COM	392.20K	SH	$33.79M 1.00%	392.20K	0.00
Camtek, Ltd.SOLE	COM	222.78K	SH	$33.78M 1.00%	222.78K	0.00
Arcutis Biotherapeutics, Inc.SOLE	COM	1.37M	SH	$32.18M 0.95%	1.37M	0.00
Flowserve CorporationSOLE	COM	434.68K	SH	$31.95M 0.94%	417.18K	17.50K
Silicon Motion Techn ADRSOLE	COM	282.55K	SH	$31.73M 0.94%	282.55K	0.00
Life Time Holdings, Inc.SOLE	COM	1.16M	SH	$31.26M 0.92%	1.16M	0.00
Rush Street Interactive, Inc.SOLE	COM	1.43M	SH	$31.20M 0.92%	1.37M	61.97K

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